Torch for igniting blast-fuses.



PATENTBD- JULY 14. 190

W i 893,309; j

- J.GRAIGHTON. v TORCH FOR. IGNITING BL v APPLICATION FILED SEPT.

AST FUSES.

TES

UTE s rarr m OFFICE.

JOHN GRAIGHTON, OF DEER LODGE, MONTANA.

'roncn non Iem'rmc BLAs'r-FUsEs.

Specification of Letters Patent.

Patented July 14, 1908.

1 Application filed. September 16, 1907. Serial No. 393,087!

To all whom it may concern:

Be it known that I, JOHN CRAIGHTON, a

I citizen of theUnited States, residing at Deer and their Lodge, in the county of Powell and State of Montana, have invented certain new and useful Improvements in Torches for Igniting Blast-Fuses, of which the/following is a speci-.

ficati0n,'reference being had to the accoin panying drawings. I

My invention relates to improvements in devices for firing explosives and more particularly to a torch or i niting device by: means of which fuses of a p urality of charges of explosive material may be successively ignited in a safe and expeditious manner.

- The object of the invention'is to provide a.

device of this character which" will be simple,

inexpensive and highly efiective for the .pur-

pose intended. I r v .With the above and other objects in view the invention consists of the features of novelty hereinafter described andclairned and accompanying drawings illustrated in the which I Figure 1 is a-perspejctive view of a torchorigniting device constructed .in accordance with my invention; Fig. 2 is a longitudinal sectionj'an'd Fig; 3 is a diagrammatic view illustrating a plurality of ex losive charges especially designed to ignite 3 My improved torch or igniting device consists of acombustible member 1 and a holder .or handle 2for the same. The member-1 is in' the form of a band of tape or fabric impregnated or coated With-a highly combustib e substance such as salt peter, and I referably make it from an ordinary lamp-wic by soaking the same in asolution of waterand salt illustrated in the drawings.

eter and .then allowing it to dry. The holder 2 is in the form of a straight rod having one of its ends bent to provide a hand piece 3 and its other endtapered to a point i so that it may be readily passed through the torch body or member 1 -one or more In Fig. 3 of thedrawings is shown a plurality of charges of dynamite or other blastmg powder arranged in the rock or earth'E which is to be blasted and provided withthe usual fuses F which are to be successively q ignited and which are therefore'of successively decreasing length from the first to the last charge. The usual practice in igniting a series of charges ofthis kind is to take a candle and successively'ig'nite-the ends of the series exploding ses which latter t e invention is times as.

I fuses F beginning with thelongest fuse. It

frequently happens that the first or second fuse in being ignited spotters and causes the candle. can. berelighted and the remainin fuses can be ignited, the first fuse has burne provedftorch or ignitin scribed is so constructe that it cannot be extinguished'b the sputtering of .the fuses and may be e ectively used to successively When thebody or member ,1 of thetorch'is once"ignit'ed'it'canndtlbe-blown out and it burns withsuflicient "owerto enable the several fuses'to be lily andeffectively ig- I 'efore the fuse of the. last one has been ignited-l j Having thus described my invention what I claimis':

igniting blast fuses, comprisin a holder in the form of ,a rod bent atone en to rovide a handfloo'p. and having its other en pointed flexible torch bent pr folded'back and forth upon itself, substantially as shown and described.

' 2. As an article of manufacture, a torch forigniting blast; fuses, comprisin a holder in the form of arod bent at one on to rovide a handloop and having its other on -point ed said torch being bent or folded back and forth upon itself a plurality of times, substantially as shown and described.

In testimony whereof I hereunto affix. my signature in the presence of twowitnesses.

' JOHN CRAIGHTON.

Witnesses:

WARNER. E. EVANS,

J EROME P. W'rcxorr.

- candle to be extinguished and that before the' to the charge and the latter oes off. My im evice above dewe nited, The use of fl einvention entirelyob-- viates the liability of the first charge of a.

.nated with a highly combustible substance,

ignite the :fuses of the several charges.

'1. As an article of manufacture, a torch for and passeda plurality of times throu h a and passed a plurality of times through a torch in the form of a strip of flexible mate rial containing a combustible substance, 

